<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>

  <body>
    <script>
      const parser = new DOMParser();
      const xmlDoc = parser.parseFromString(
        `
            <xml>
                <persons>
                    <person>
                        <name>小明</name>
                        <age>18</age>
                    </person>
                    <person>
                        <name>小红</name>
                        <age>19</age>
                    </person>
                </persons>
            </xml>
        `,
        "text/xml"
      );

      console.log("constructor:", xmlDoc.__proto__.constructor); // constructor: ƒ XMLDocument() { [native code] }
    </script>
  </body>
</html>
